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watchdog: mtk_wdt: use platform_get_irq_optional

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The watchdog pre-timeout (bark) interrupt is optional.  Use
platform_get_irq_optional() to avoid seeing such following
error message:
>>> mtk-wdt 10007000.watchdog: IRQ index 0 not found

Signed-off-by: Tzung-Bi Shih <tzungbi@google.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20211208095555.4099551-1-tzungbi@google.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
This commit is contained in:
Tzung-Bi Shih 2021-12-08 17:55:55 +08:00 committed by Wim Van Sebroeck
parent 2cbc5cd0b5
commit 1bafac47a4
1 changed files with 1 additions and 1 deletions
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2
drivers/watchdog/mtk_wdt.c
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@ -339,7 +339,7 @@ static int mtk_wdt_probe(struct platform_device *pdev)
if (IS_ERR(mtk_wdt->wdt_base))
return PTR_ERR(mtk_wdt->wdt_base);
irq = platform_get_irq(pdev, 0);
irq = platform_get_irq_optional(pdev, 0);
if (irq > 0) {
err = devm_request_irq(&pdev->dev, irq, mtk_wdt_isr, 0, "wdt_bark",
&mtk_wdt->wdt_dev);